Connected: An Internet Encyclopedia
RFC 1510 - 6.3.1. The NULL Encryption System (null)

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### 6.3.1. The NULL Encryption System (null)

If no encryption is in use, the encryption system is said to be the NULL encryption system. In the NULL encryption system there is no checksum, confounder or padding. The ciphertext is simply the plaintext. The NULL Key is used by the null encryption system and is zero octets in length, with keytype zero (0).

Next: 6.3.2. DES in CBC mode with a CRC-32 checksum (des-cbc-crc)

Connected: An Internet Encyclopedia
RFC 1510 - 6.3.1. The NULL Encryption System (null)